Multicolor intaglio-printing machine



March 12,1929, o. WILHELM lu'urnon z wrwuo ram-1N@ lucana l Filed oci. s, 19g? miv @MM/ 82% p @l @g Paim'ed Mar. 12, 1929.

UNITED STATES OTTMAR WILHELM, OF AUGSBURG, GERMANY,

ASSIGNOR T THE FIRM MASCHINEN- FABRIK AUGSBURGeNUERNBERG, AKTIENGESELLSCHAFT, 0F AUGSBURG, GER- MANY, A CORPORATION OF GERMANY.

viriULcrIcoLon INrAGLIo-PETNTTNG MAGHINE.

l Application inea october 5, ,1927, serial No.

My invention relates to multi-color intaglio printing machines for printing on sheets. In the old machines of this type very considerable ioor space is required which is not always available in printing works. 'It is the object of the invention to' reduce the required floor space so that it is the saii'ic as that taken up by a sin le color printing machine. According to this invention, a sheet received by grippers is first passed between the impression cylinder and the form cylinder of the first'printing set or couple and is then transferred to a delivery druin arranged at the side of and below the impression cylinder. This delivery drum transfers the sheet to the impression cylinder of the second printing setxor couple which is arranged below thetirst printing set.- The sheet after passing the second couple is then transferred toa second delivery driiin arranged at the side and below the impression cylinder of the second set, and may then be passed either to a further printing set or to the delivery apparatus.

` The accompanying drawing shows diagrammatically by way of example one construction embodying, the invention.

,A sheet coming from a feed -table a is caught by the grippers b of an impression cylinder c of the first printing set, is passedy between the impression cylinder c and the term cylinder (l and is printed withtlieirst color. The sheet is then transferred to af' ydelivery drumv f provided with grippers e-,- the periphery of the drum being approxi-'- mately double the length of the sheet printed upon.- From said delivery drum, the sheet is first transferred to a drying drum g provided with heating devices, the fresh iinpression being turned oiitside. The sheet is then returned-by gripper-s h ot' the drying drum g to the second halt c' ofthe delivery drum said haltl being preferably provided Awith cooling devices. Thereupon, the sheet isl taken olf the delivery drinn by grippers lc of 'an impression cylinder l of the second printing set, which is arranged vertically underneath the impression cylinder c of the tween impreion cylinder Z and form cylinder m of the second printing set and is printed withthe second" color. Now the couple.- y

ing couple, anda delivery .receiving the printed sheets 'from the transfirst printing set. .The sheet now' passes be- 224,039, and in Germany October 18, 1926.

sheet is againtraiisferred to one half n of a delivery drum and thereby is passed on to a 55.

drying drum 0. From the latter the sheet passies to the second halt` p of the delivery drum and thereby is transferred to the delivery apparatus g. Of course, the sheet may also be passed from the delivery drinn 77, in-

stead ot' to the delivery device g, to the impression cylinder of a third printing set which may be arranged below the second .printing set, the invention naturally not bei-ng lrestricted to tWo color printing inachines.

' What I claim is:

1. In a multi-color intaglio 'printing machine for printing on sheets, the combination of a plurality of superposed printing conples each comprising an impression and a form cylinder, a transfer cylinderV adapted to cooperate with the impression cylinder of each printing couple, a drying cylinder adjacent each transfer cylinder, and two sets- 75: i

o'grippers provided on said transfer cylinders so as to 'first transfer Ithe print- 'ed sheet to the transfer cylinder and fthereby to said drying cylinder, the latter then retransferring the printed sheet to the same transfer cylinder and thereby to the impression cylinder of the next' printing l 2.'In a mnlti-color intaglio printing machine for printing on sheets, the combination so -of a pliiralityjof .printing couples each com- 1,1 prising'an impression cylinder and a form cylinder, the cylinders of said printing couples being siiperposed in vertical relation, a transfer cylindejr cooperatively related to- 9o each impression cylinder, a drying cylinder adjacent each transfer cylinder, two sets of` grippers provided on said transfer cylinders and arranged to first transfer the printed sheet to the transfer cylinder and thereby to the Ycorresponding drying cylinder, the latter re-transferring the sheet to its corresponding transfer cylinder to be thereby transferred to the impression cylinderof the next printfer cylinder of the last printing couple.

In testimony whereof I -have aiiixed my l signature. y

orafi/IAR WILHELM.

eclianism for loo- 

